Minidoka Dam Modifications

Minidoka 6 South Gated Spillway Cell with GateConstruct new south gated spillway, new north and south roller-compacted concrete (RCC) dikes, new north and south side canal headworks, north and south RCC overflow spillways, and modify the existing north gated spillway. Demolish the existing overflow spillway and canal headworks; excavate foundations, spillway approach channel, and spillway outlet channel, install government-furnished radial gates, gate hoists, and associated equipment; furnish and install fencing, gates, railing, stairs, and gantry crane and associated rails.



  • Cost: $21,478,000
  • Owner: Bureau of Reclamation (USBR)
  • Designer: USBR
  • Construction Period: 09/2011 – 03/2015